73299155
Mar 2, 1981
Aug 9, 1983
Pressure Transmitters, Controllers, Switches, Thermostats, Gauges and Indicators, Temperature Gauges and Indicators, Fan Speed Monitors, Dampers, Regulators, and Electronic Controllers, All for Use in the Working and Performance of Boilers; Valves Operated Electrically and/or by Changes in Physical Conditions Such as Pressure and Fluid Level, Being for Use with Boilers; Liquid Level Sensing Apparatus and Switches
Electrical and Scientific Apparatus